133613004 has 36 divisors (see below), whose sum is σ = 362665464. Its totient is φ = 38174976.

The previous prime is 133612991. The next prime is 133613023. The reversal of 133613004 is 400316331.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113029 + ... + 114204.

Almost surely, 2^133613004 is an apocalyptic number.

133613004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

133613004 is an abundant number, since it is smaller than the sum of its proper divisors (229052460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133613004 is a wasteful number, since it uses less digits than its factorization.

133613004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227254 (or 227245 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 133613004 is about 11559.1091352232. The cubic root of 133613004 is about 511.2298959301.

Adding to 133613004 its reverse (400316331), we get a palindrome (533929335).

The spelling of 133613004 in words is "one hundred thirty-three million, six hundred thirteen thousand, four".